Improvement in apparatus for raising cream



J. W. BRADY. Apparatus fof 'BL'asing Cream.

No. 204,127. Patented May 28,1878.

Si? f7@ UNITED STATES PATENT OEEIcEc JAMES W. BRADY, OF CATONSVILLE,MARYLAND.

IMPROVEMENT IN APPARATUS FOR RAISING CREAM.l

Specification forming part of Letters Patent No. 204,127, dated May 28,1878; application filed April 11, 181s.

To all 'whom 'it may concern:

Be it known that I, JAMES W. BRADY, of Catonsville, in the county ofBaltimore and State of Maryland, have invented a new and usefulImprovement in Cream-Raisin g Apparatus, which improvement is fully setforth in the following specication, reference being had to the annexeddrawings, in which- Figure l is a vertical section. Fig. 2 is a planview of the cover, looking upward; and Fig. 3, a plan view of thecross-head, looking downward.

The object of my invention is .to rapidly raise the cream on milk bymeans of a vacuum, by the combination, in a milk-setting apparatus, ofthe case A, Fig. 1, with its cover a, stop-cock or faucet b, themilk-vessel B, with its elastic packing or band c around its externalperiphery, the piston-rod C, and cross-head D, to operate as hereinafterdescribed.

The cover is illustrated more in detail in plan view, Fig. 2, in which dis a hole, through which the .piston-rod C moves up and down inoperating my invention, so packed as to render it air-tight; and c is anelastic band or packing to render the cover air-tight. In Fig. 1, c isan elastic band or packing,

and may be placed at or near the top or bottom of the vessel, or at bothplaces, if desired.

, Its purpose is to close the space between the case and milk-vessel, torender the same airtight.

In operating my invention, the faucet b is opened, the milk-vessel B isplaced within the case A and forced downward until the elastic band orpacking has entered the case, when the faucet b is closed and the vesselfilled with the milk to be treated. In this position it is held by theimprisoned air in the case. A cross-head, D, as shown in Fig. l, is thenplaced on the milk-vessel and the cover a put on the case.` Thepiston-rod is then inserted in the hole d, and after opening the faucetb the milk-vessel is forced to the bottom of the case by the screw inthe beam of the frame E, when the faucet is again closed,

and a vacuum is produced in the `case abbve the milk.

E is a frame that may be used to embrace ticular shape or form of theparts shown, as

it is evident thatA the construction may be changed somewhatwithoutdeparting from the spirit of my invention. The cross-head may be asingle bar instead of a perforated disk, and the cover may be shaped andfitted differently, and the screw and rod C may be one and the samedevice for operating the inner vessel, or other means than a screw canbe used for operating the rod C.

What I claim is- 1. As an improved device for setting milk to raisecream thereon, jointly, an air-tight inclosing cylinder or case, havinga stop-cock near the bottom, and a packed piston-rod passing through itscover at top, and a milkcontaining cylinder or vessel, properly packed,and operated within said inclosing-cylinder after the manner of a packedclosely-fitting piston, by force communicated to it through the mediumof the piston-rod, substantially as set forth.

2. In a device for raising cream on milk, the combination of anair-tight inclosing vessel or cylinder andan inner milk-containingvessel or cylinder, closely fitted and packed, so as to make anair-tight joint with the inner surface of the inclosing-cylinder, andmechanism to impart to said cylinder, either or both, sliding movementof the one within or upon the other, after the manner. of the tubes of atelescope, with a view to condense or expel the atmosphere from, or tocreate a partial vacuum within, said cylinder, substantially asdescribed.

' J. W. BRADY.

Witnesses JAS. S. SHARPE, H. A. DoBsoN.

